Determination of the Surface Roughness Parameter and Wind Shear Exponent of Kisii Region from the On-Site Measurement of Wind Profiles

Table 2

Extrapolated average wind speeds at different hub heights using site specific wind shear exponent and constant shear exponent (1/7).

Month	Hub Height	Average wind speed for Nyamecheo Station		Average wind speed for KSU Station		Average wind speed for Ikobe station
		FEBRUARY	20	1.64	2.56	3.05	3.67	2.09	2.73
30	1.74		3.53	3.24	4.33	2.22	3.38
50	1.87		5.28	3.49	5.34	2.39	4.43
70	1.97		6.88	3.67	6.13	2.47	5.30
MARCH	20	1.11	2.00	2.52	3.03	1.59	2.06
	30	1.17	3.00	2.68	3.58	1.69	2.55
	50	1.26	5.00	2.88	4.41	1.82	3.33
	70	1.33	7.00	3.03	5.06	1.91	3.96
APRIL	20	1.12	1.92	2.21	2.66	-	-
	30	1.18	2.80	2.35	3.14	-	-
	50	1.27	4.51	2.53	3.87	-	-
	70	1.34	6.16	2.66	4.44	-	-
MAY	20	1.29	2.22	2.90	3.48		-
	30	1.37	3.23	3.08	4.11	-	-
	50	1.47	5.20	3.31	5.07	-	-
	70	1.55	7.11	3.48	5.82	-	-
JUNE	20	1.12	1.92	2.56	3.07	-	-
	30	1.18	2.80	2.71	3.62	-	-
	50	1.27	4.50	2.92	4.47	-	-
	70	1.34	6.16	3.07	5.13	-	-
JULY	20	1.65	2.84	3.65	4.38	-	-
	30	1.75	4.14	3.87	5.18	-	-
	50	1.88	6.66	4.17	6.38	-	-
	70	1.99	9.10	4.38	7.33	-	-